» Recording Thermometer (0410)
Immagini
DESCRIPTION
Exhibit 410 is a registering thermometer used in meteorology to record the temperature for a given period. The thermometer consists of two strips of different metals with different thermal expansion coefficients. The registration is effected by writing on a brass cylinder covered with millimeter paper which rotates slowly driven by a brass clock mechanism. The entire apparatus is enclosed in a metal box with a large window which is hinged on the lower back side for complete internal access and has a brass handle on the top. The rotating cylinder was constructed by Richard Frères, while the box and the metallic net seems to have been constructed in the physics workshop.ISCRIZIONI
- Sulla base in ottone è inciso il numero di serie: "41644".
- Sulla base in ottone è inciso: "RICHARD FRERES¶
COSTRUCTEURS BREVETES¶
PARIS".
BIBLIOGRAPHY
- [1] URL [ http://www.astropa.unipa.it/biblioteca/Strumenti/e-catalogues/Richard1886/Catalogo.html ] (Pagina-54)
Dati Catalografici
| Data di costruzione: | --- |
|---|---|
| Data di carico: | Ignota |
| Nr. Inventario: | Ignoto (Ignoto) |
| Costruttore: | Richard Fréres |
| Materiale: | metallo, ottone, vetro |
| Dimensioni: | Cassetta : 22 cm x 13 cm x 16 cm; Protezione sensore: 13 cm x 7 cm x 10 cm |
| Conservazione: | buono (Manca la lamina bimetallica, ossia la parte principale del termometro e manca la chiave per caricare il meccanismo ad orologeria del cilindro.) |